[MO] Align MO namespaces (#7708)

* Moved and merged mo/ and extensions/ into openvino/tools/mo

* edited imports

* edited docs to use mo script from entry_point

* edited MO transformations list loading and setup.py

* changed full path -> 'mo' entry point in docs (leftovers)

* corrected package_BOM

* updated resolving --transformation_config in cli_parser.py

* pkgutil-style __init__.py, added summarize_graph into entry points

* updated DOCs for the new --transformations_config

* fix select

* updated install instructions, fixed setup.py for windows and python_version < 3.8

* fixed typo in requirements.txt

* resolved conflicts

* removed creating custom __init__.py from setup.py

* corrected folder with caffe proto

* corrected loading user defined extensions

* fix openvino.tools.mo import in serialize.py

* corrected layer tests for new namespace

* fix in get_testdata.py

* moved model-optimizer into tools/

* renamed import in POT

* corrected mo.yml

* correct CMakeLists.txt for the newest tools/mo

* corrected find_ie_version.py

* docs and openvino-dev setup.py update for the newest tools/mo

* miscellaneous leftovers and fixes

* corrected CI files, pybind11_add_module in CMakeLists.txt and use of tools/mo path instead of tools/model_optimizer

* add_subdirectory pybind11 for tools/mo

* POT path fix

* updated setupvars.sh setupvars.bat

* Revert "updated setupvars.sh setupvars.bat"

This reverts commit c011142340.

* removed model-optimizer env variables from setupvars

* updated CMakeLists.txt to pack MO properly with tests component

* corrected left imports, corrected loading requirements for layer tests

* mo doc typo correction

* minor corrections in docs; removed summarize_graph from entry_points

* get_started_windows.md, MonoDepth_how_to.md corrections, mo path corrections

.github/workflows/mo.yml

@@ -2,10 +2,10 @@ name: MO
 on:
   push:
     paths:
-      - 'model-optimizer/**'
+      - 'openvino/tools/mo/**'
   pull_request:
     paths:
-      - 'model-optimizer/**'
+      - 'openvino/tools/mo/**'
 
 jobs:
   Pylint-UT:
@@ -24,7 +24,7 @@ jobs:
         uses: actions/cache@v1
         with:
           path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('model-optimizer/requirements*.txt') }}
+          key: ${{ runner.os }}-pip-${{ hashFiles('openvino/tools/mo/requirements*.txt') }}
           restore-keys: |
             ${{ runner.os }}-pip-
             ${{ runner.os }}-
@@ -43,11 +43,11 @@ jobs:
           # requrements for CMake
           sudo apt update
           sudo apt --assume-yes install libusb-1.0-0-dev
-        working-directory: model-optimizer
+        working-directory: openvino/tools/mo
 
       - name: Pylint
-        run: pylint -d C,R,W mo/ mo.py extensions/
-        working-directory: model-optimizer
+        run: pylint -d C,R,W openvino/tools/mo/ openvino/tools/mo/mo.py
+        working-directory: openvino/tools/mo
 
       - name: CMake
         run: |
@@ -62,5 +62,4 @@ jobs:
           env
           mkdir ../mo-ut-logs
           python3 -m xmlrunner discover -p *_test.py --output=../mo-ut-logs
-        working-directory: model-optimizer
-
+        working-directory: openvino/tools/mo